Watson, John B. (1913). "Psychology as the behaviorist views it," Psychological Review, 20:158-177. With his behaviorism, Watson put the emphasis on external behavior of people and their reaction to a given situation, rather than the internal, mental states of those people. He argued that the analysis of behavior and reactions was the only objective way to get insight into human actions. Online version

Skinner, B. F. (1953). Science and Human Behavior. This is Skinner's seminal textbook, in which he discusses many subjects that are not usually covered, such as psychotherapy, self-control, and thinking. It was written as part of a publishing deal so that he could get his utopian fiction novel published. It has proven to be an enduring Radical Behaviorist treatment of the person and society. Pavlovian behaviorism has been absorbed into and obliterated by other theories of behavior, including Radical Behaviorism. Online version

Powers, William T.(2005). Behavior: The control of perception (2nd Edition) New Canaan, Connecticut: Benchmark. The basic textbook on the control theory approach to understanding behavior and cognition.

Powers, William(2008). Living control systems III: The fact of control. Bloomfield, New Jersey: Benchmark

Hugo Münsterberg (1908). On the Witness Stand. Considered to be the first publication to apply psychology to legal matters. Among the topics discussed are the reliability of witnesses' testimony and memory, lie detection, and methods of interrogating suspects of crime.

Allport, G.W. (1954). The nature of prejudice. New York: Doubleday. [This book expounds one of the most influential theories of prejudice reduction, known as the Contact Hypothesis: increasing contact between members of different groups is the foundation for reducing intergroup hostility.]